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A common use - would be to use one printer with four computers. Each computer has a data cable leading to the 4-way switch - and the switch has one data cable leading to the printer. Each user turns the switch to the relevant position in order to use the printer.
you switch the second fraction around ( multiply by the reciprocal ) because it is way easier than trying to actually divide the fraction by dividing, you get the same answer. but we multiply by the recipricol because multiplying fractions is simpler. example.... 4/6 divided by 8/5 you then get 4/6 * 5/8 = 5/12
First the number needs to be changed in appearance from 4 3/4 to 19/4. Then the numerator and the denominator need to switch places.Then you get the reciprocal, which is 4/19.
The easiest way: (4+4+4+4+4+4+4)/4
4 = 4th or fourth.